INDEX 
TO THE 
PHILOSOPHICAL TRANSACTIONS 
FOR THE YEAR 1867. 
A. 
Abel (F. A.). The Bakerian Lecture. — Researches on Gun-cotton. — Second Memoir. On the Sta- 
bility of Gun-cotton, 181. — Action of light upon Gun-cotton, 185 ; effects of heat upon Gun-cotton, 
193 ; influence exerted upon the stability of Gun-cotton by special modes of preparing and preserving 
it, 218 ; other observations instituted upon large quantities of Gun-cotton, 238. 
Asterosmilia , 652 (see Duncan). 
B. 
Bakerian Lecture, 181 (see Abel). 
Battersbyia, 648 (see Duncan). 
Bladder, muscular arrangements of, 17 (see Pettigrew). 
Blood, influence of the movements of respiration on the circulation of the, 571 (see Sanderson). 
Bunt (T. G.). Discussion of Tide Observations at Bristol, 1. 
C. 
Caustics, 7 (see Cayley). 
Cayley (A.). A Supplementary Memoir on Caustics, 7. 
. An Eighth Memoir on Quantics, 513. 
Chemical change, connexion between the conditions of a, and its amount, 117 (see Harcourt). 
Chemical intensity of total daylight, 555 (see Roscoe). 
Clarke (Captain A. R.). Abstract of Results of the Comparisons of the Standards of Length of 
England, France, Belgium, Prussia, Russia, India, Australia, made at the Ordnance Survey Office, 
Southampton. With a Preface by Colonel Sir Henry James, 161. 
Clarke (J. L.). On the Structure of the Optic Lobes of the Cuttle-fish, 155. 
4 Y 2 
